/* Copyright (c) 2006 Brandon Aaron (http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) 
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-07-21 18:45:56 -0500 (Sat, 21 Jul 2007) $
 * $Rev: 2447 $
 *
 * Version 2.1.1
 */
(function($) {
    $.fn.bgIframe = $.fn.bgiframe = function(s) {
        if ($.browser.msie && /6.0/.test(navigator.userAgent)) {
            s = $.extend({top:'auto',left:'auto',width:'auto',height:'auto',opacity:true,src:'javascript:false;'},
                         s || {});
            var prop = function(n) {
                return n && n.constructor == Number ? n + 'px' : n;
            },html = '<iframe class="bgiframe"frameborder="0"tabindex="-1"src="' + s.src + '"'
                         + 'style="display:block;position:absolute;z-index:-1;' + (s.opacity
                !== false ? 'filter:Alpha(Opacity=\'0\');' : '') + 'top:' + (s.top
                == 'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')' : prop(s.top))
                         + ';' + 'left:' + (s.left
                == 'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')' : prop(s.left))
                         + ';' + 'width:' + (s.width
                == 'auto' ? 'expression(this.parentNode.offsetWidth+\'px\')' : prop(s.width)) + ';' + 'height:'
                         + (s.height == 'auto' ? 'expression(this.parentNode.offsetHeight+\'px\')' : prop(s.height))
                         + ';' + '"/>';
            return this.each(function() {
                if ($('> iframe.bgiframe', this).length == 0) {
                    this.insertBefore(document.createElement(html),
                                      this.firstChild);
                }
            });
        }
        return this;
    };
})(jQuery);